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/* crt0-efi-ia64.S - IA-64 EFI startup code.
   Copyright (C) 1999 Hewlett-Packard Co.
	Contributed by David Mosberger <davidm@hpl.hp.com>.
 
   This file is part of GNU-EFI, the GNU EFI development environment.
 
   GNU EFI is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.
 
   GNU EFI is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with GNU EFI; see the file COPYING.  If not, write to the Free
   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA. */
 
	.text
	.psr abi64
	.psr lsb
	.lsb
 
	.proc _start
_start:
	alloc loc0=ar.pfs,2,2,2,0
	mov loc1=rp
	movl out0=@gprel(ImageBase)	// out0 <- ImageBase (ldbase)
	;;
	add out0=out0,gp
	movl out1=@gprel(_DYNAMIC)	// out1 <- _DYNAMIC
	;;		// avoid WAW on CFM
	add out1=out1,gp
	br.call.sptk.few rp=_relocate
.Lret0:	
	cmp.ne p6,p0=r0,r8		// r8 == EFI_SUCCESS?
(p6)	br.cond.sptk.few .exit		// no ->
 
.Lret1:
 
	mov out0=in0			// image handle
	mov out1=in1			// systab
	br.call.sptk.few rp=efi_main
.Lret2:
.exit:
	mov ar.pfs=loc0
	mov rp=loc1
	;;
	br.ret.sptk.few rp
 
	.endp _start
 
 
	// PE32+ wants a PLABEL, not the code address of the entry point:
 
	.align 16
	.global _start_plabel
	.section .plabel, "a"
_start_plabel:
	data8	_start
	data8	__gp
 
	// hand-craft a .reloc section for the plabel:
 
#define IMAGE_REL_BASED_DIR64	10
 
	.section .reloc, "a"
	data4	_start_plabel				// Page RVA
	data4	12					// Block Size (2*4+2*2)
	data2	(IMAGE_REL_BASED_DIR64<<12) +  0	// reloc for plabel's entry point
	data2	(IMAGE_REL_BASED_DIR64<<12) +  8	// reloc for plabel's global pointer
 

Rev 2726	Rev 2782
1	/* crt0-efi-ia64.S - IA-64 EFI startup code.	1	/* crt0-efi-ia64.S - IA-64 EFI startup code.
2	Copyright (C) 1999 Hewlett-Packard Co.	2	Copyright (C) 1999 Hewlett-Packard Co.
3	Contributed by David Mosberger <davidm@hpl.hp.com>.	3	Contributed by David Mosberger <davidm@hpl.hp.com>.
4		4
5	This file is part of GNU-EFI, the GNU EFI development environment.	5	This file is part of GNU-EFI, the GNU EFI development environment.
6		6
7	GNU EFI is free software; you can redistribute it and/or modify	7	GNU EFI is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by	8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2, or (at your option)	9	the Free Software Foundation; either version 2, or (at your option)
10	any later version.	10	any later version.
11		11
12	GNU EFI is distributed in the hope that it will be useful,	12	GNU EFI is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.	15	GNU General Public License for more details.
16		16
17	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License
18	along with GNU EFI; see the file COPYING. If not, write to the Free	18	along with GNU EFI; see the file COPYING. If not, write to the Free
19	Software Foundation, 59 Temple Place - Suite 330, Boston, MA	19	Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20	02111-1307, USA. */	20	02111-1307, USA. */
21		21
22	.text	22	.text
23	.psr abi64	23	.psr abi64
24	.psr lsb	24	.psr lsb
25	.lsb	25	.lsb
26		26
27	.proc _start	27	.proc _start
28	_start:	28	_start:
29	alloc loc0=ar.pfs,2,2,2,0	29	alloc loc0=ar.pfs,2,2,2,0
30	mov loc1=rp	30	mov loc1=rp
31	movl out0=@gprel(ImageBase) // out0 <- ImageBase (ldbase)	31	movl out0=@gprel(ImageBase) // out0 <- ImageBase (ldbase)
32	;;	32	;;
33	add out0=out0,gp	33	add out0=out0,gp
34	movl out1=@gprel(_DYNAMIC) // out1 <- _DYNAMIC	34	movl out1=@gprel(_DYNAMIC) // out1 <- _DYNAMIC
35	;; // avoid WAW on CFM	35	;; // avoid WAW on CFM
36	add out1=out1,gp	36	add out1=out1,gp
37	br.call.sptk.few rp=_relocate	37	br.call.sptk.few rp=_relocate
38	.Lret0:	38	.Lret0:
39	cmp.ne p6,p0=r0,r8 // r8 == EFI_SUCCESS?	39	cmp.ne p6,p0=r0,r8 // r8 == EFI_SUCCESS?
40	(p6) br.cond.sptk.few .exit // no ->	40	(p6) br.cond.sptk.few .exit // no ->
41		41
42	.Lret1:	42	.Lret1:
43		43
44	mov out0=in0 // image handle	44	mov out0=in0 // image handle
45	mov out1=in1 // systab	45	mov out1=in1 // systab
46	br.call.sptk.few rp=efi_main	46	br.call.sptk.few rp=efi_main
47	.Lret2:	47	.Lret2:
48	.exit:	48	.exit:
49	mov ar.pfs=loc0	49	mov ar.pfs=loc0
50	mov rp=loc1	50	mov rp=loc1
51	;;	51	;;
52	br.ret.sptk.few rp	52	br.ret.sptk.few rp
53		53
54	.endp _start	54	.endp _start
55		55
56		56
57	// PE32+ wants a PLABEL, not the code address of the entry point:	57	// PE32+ wants a PLABEL, not the code address of the entry point:
58		58
59	.align 16	59	.align 16
60	.global _start_plabel	60	.global _start_plabel
61	.section .plabel, "a"	61	.section .plabel, "a"
62	_start_plabel:	62	_start_plabel:
63	data8 _start	63	data8 _start
64	data8 __gp	64	data8 __gp
65		65
66	// hand-craft a .reloc section for the plabel:	66	// hand-craft a .reloc section for the plabel:
67		67
68	#define IMAGE_REL_BASED_DIR64 10	68	#define IMAGE_REL_BASED_DIR64 10
69		69
70	.section .reloc, "a"	70	.section .reloc, "a"
71	data4 _start_plabel // Page RVA	71	data4 _start_plabel // Page RVA
72	data4 12 // Block Size (24+22)	72	data4 12 // Block Size (24+22)
73	data2 (IMAGE_REL_BASED_DIR64<<12) + 0 // reloc for plabel's entry point	73	data2 (IMAGE_REL_BASED_DIR64<<12) + 0 // reloc for plabel's entry point
74	data2 (IMAGE_REL_BASED_DIR64<<12) + 8 // reloc for plabel's global pointer	74	data2 (IMAGE_REL_BASED_DIR64<<12) + 8 // reloc for plabel's global pointer
75		75

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(root)/tags/0.3.0/boot/arch/ia64/loader/gefi/gnuefi/crt0-efi-ia64.S – Rev 2726 → 2782